<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .tab_con{
            width: 500px;
            height: 350px;
            margin: 50px auto 0;
        }
        .tab_btns{
            height: 50px;
        }
        .tab_btns input{
            width: 100px;
            height: 50px;
            background: #dddddd;
            border: 0;
            outline: none;
        }
        .tab_btns .active{
            background: gold;
        }
        .tab_cons{
            height: 300px;
            background: gold;
        }
        .tab_cons div{
            height: 300px;
            line-height: 300px;
            text-align: center;
            display: none;
            font-size: 30px;
        }
        .tab_cons .current{
            display: block;
        }
    </style>
    <script src="../js/jquery-1.12.4.min.js"></script>
    <script>
        $(function () {
            var $btn = $('.tab_btns input');
            var $div = $('.tab_cons div');

            $btn.click(function () {
                $(this).addClass('active').siblings().removeClass('active');

                $div.eq($(this).index()).addClass('current').siblings().removeClass('current');
            })
        })
    </script>
</head>
<body>
    <div class="tab_con">
        <div class="tab_btns">
            <input type="button" value="按钮一" class="active">
            <input type="button" value="按钮二">
            <input type="button" value="按钮三">
        </div>
        <div class="tab_cons">
            <div class="current">CA</div>
            <div>B</div>
            <div></div>
        </div>
    </div>
</body>
</html>
